a black plastic hunting rifle hated for being black and cool.
Johnny Spleenburger is the AR-15 champion! He can kill coyotes before he gets attacked by them
by CanukGuy May 21, 2020
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The gun that gets a real bad rep because it is used in almost every mass shooting. Although in reality it is used because it is very common and plentiful in America. The fake news media typically portrays the AR-15 as the "Most deadliest gun ever made" or that it is a "Weapon of War" although in actuality it is a civilian version of the M4A1 that is the REAL weapon of war.
The media acts as if the AR-15 is the only gun in existence.
by A Human Male July 21, 2018
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AR does NOT stand for Assault Rifle
50 Cent "Wanksta"

"what you know about AKs and AR-15s?"
by CubaGT February 13, 2007
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The AR-15 is a common assualt rifle. Very similar in looks to an M-16, but not exactly.

AR does NOT stand for Assault Rifle, as is commonly believed. AR stands for the original company that manufactured it, ArmaLite. ArmaLite sold their rights to the AR-10 and AR-15 designs in 1959 to Colt.

With a simple barrel and receiver switch, this rifle can fire 14 different calibers and sizes of ammunition, ranging from .22LR to .50BMG.

Completely customizable, this rifle can also be a personal defense firearm at less than 36 inches long, to a sniper rifle over 50 inches.

Standard magazine (or clip, if you prefer) is 30 rounds, but aftermarket 5, 10, 20, 30, 40, 60, 90, and 100 round magazines are available as well, but only the 5 round, non-detachable clip is legal in California. These clips are breech loaded, and do NOT come off. The reason for this is because of the Assault Weapon Ban that The Clinton Administration put into affect, and this method of semi-automatic action slows the loading process and is supposed to reduce murders. All it did was boost illegal weapon sales.

With the modular accessory rail, hundreds of different aftermarket accessories are available. These range from simple, and relatively cheap in price, tac-lights, vertical secondary pistol grips,to night-sights, to bipods, to thermal scopes, to night-vision scopes and infrared scopes beyond normal mag-scopes with somewhere around 20+ compatible scopes. Other accessories are different stocks, from collapsibles to solid body, to skeleton, to adjustables.

These rifles, when sighted in are accurate up to 500 yards, with a range well beyond that.

The semi-automatic feed uses a direct gas impingement system. (If lost with this term, use wiki)

This rifle was designed by Eugene Stoner in 1958 as an updated, lighter version of the AR-10. The design was initially submitted as a new rifle for the US Armed Forces, and is what the M-16 was based off of.

Overall, this is a very effective weapon for home defense, hunting, sharpshooting, and just fun at the range.
Possible calibers for the AR-15 are:

.223REM
5.56x45mm NATO
(Yes, the NATO round is different from a .223REM. The NATO round has higher power, and needs mods to the weapon to be fired safely. Commonly confused and called the same as .223REM, because they have the same physical dimensions but different power levels)
.22LR
6.5 Grendel
6.8SPC
.45 Bushmaster
.300 Whisper
.458SOCOM
9mm Parabellum
7.62x39mm
.50AE
.50 Beowulf
.50BMG
(All these .50s are different power ratings and dimensions, but the bullet itself is the same size.)
.45ACP
by Brian Keeney November 9, 2006
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A broad term for a sporting and military rifle originally developed by Eugene Stoner while working for the ArmaLite firearms company, a division of Fairchild Aircraft (The patent was later sold to Colt because of financial issues). The original design (released in 1956), was based on the AR-10 in .308, was revolutionary at the time for using a .22 caliber intermediate cartridge, and a semi-direct-impingement . This cartridge offered low recoil and similar terminal ballistics to the larger .308 Winchester (7.62x51mm NATO).

As for the idea that the AR-15 is a dangerous weapon of war designed to kill, and that actually holds some truth. Eugene Stoner originally designed the AR platform for military contracts. However, Stoner designed the AR not for pure killing, but for these traits: Lightness, low recoil, modularity, and ammunition size while still retaining enough wounding potential to get the job done. As for the reason that they are used in mass shootings? First off, most people in America do not know much about guns and are quick to assume that any black "tactical" rifle is an AR (Even if they're not). Secondly? They're the most popular rifle in America. For the same reasons I just listed, the AR is extremely popular here, and is readily available. It's not something to be scared of! Go shoot one, and you might see that.
Eugene Stoner designed the AR-15 primarily for it's weight and not for it's wounding potential.
by Xxx_Eug3n3_St0n3r_xxX June 8, 2020
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Is an essential tool in life for killing terrorists that try to pork off on your couch at night; 30 magazine clip in half a second.
That AR-15 is not great at having a mag
by Beast master 6.4 x 10^100000 December 18, 2018
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The AR-15 is a hyper deadly fully semi automatic clip loading high capacity bump stock military style assault weapon which utilizes a .50 caliber 30 magazine clip. It can also be modified with deadly attachments like a chainsaw bayonet or the dreaded shoulder thing that goes up. The magazine clip can also be changed to utilize a 9mm bullet which is famous for blowing the lung out of the body.

The AR stands for Assault Rifle and the 15 indicates a power level of 15. Keep in mind that the maximum power level is 10. It is a deadly weapon of mass destruction which would simultaneously be useless against the US Government if they ever became tyrannical because they have drones and tanks. It is far too dangerous for civilians to own as it has been used in every mass shooting ever.
The AR-15 Assault Rifle needs to be banned! It's too assaulty!
by bigchungus342 August 12, 2022
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